Question

Factories x2-4y2-4x+4

Answer 1

hey your ans is here


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given to us:-

x2+4y2-4x+4

group them

(x2-4y2)-(4x+4)

now

we know :-
a2-b2=(a+b)(a-b)

so

(x)2-(2y)2-(4x+4)
(x-2y)(x+2y)-4(x-1)

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